This rule does not work!

Hi! I was trying LT today, it is a great project, congratulation on that, continue the great work!

However one of the first sentences I tried did not triggered any error. My sentence is:
This word have errors.

I was expecting it to throw an error on the HAVE word as Grammarly does. But it says it is OK.

THANKS!

Thanks for the report. Here’s how you can help to implement more rules: Development Overview - LanguageTool Wiki

The fix should be online tomorrow.